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ケーブルの不具合により、Fibre Channel ターゲット HBA でリンク切れが検出されました

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環境

  • ONTAP 9
  • FCP

問題

  • FC ターゲット ポート リンク - 不安定/ダウン。
  • 以下のイベントがNetAppのEMS に記録されます:

[Node1: fct_tpd_work_thread_0: scsitarget.slifct.linkBreak:error]: Link break detected on Fibre Channel target HBA 4c with event status 1 , topology type 1, status1 0x0, status2 0x0.
[Node1: fct_tpd_work_thread_0: scsitarget.hwpfct.linkUp:notice]: Link up on Fibre Channel target adapter 4c.

[Node1: fct_tpd_work_thread_0: scsitarget.slifct.wqeError:debug]: FC port 3a has a WQE processing failure of type SLI_ELS_REQ, command PLOGI, subtype x0, with status of 3 and an extended status x4 for NPIV port 0. 
[Node1: fct_tpd_work_thread_0: scsitarget.slifct.wqeError:debug]: FC port 3a has a WQE processing failure of type SLI_ELS_REQ, command PLOGI, subtype x0, with status of 3 and an extended status x1a for NPIV port 0.
[Node1: fct_tpd_work_thread_0: scsitarget.slifct.linkBreak:error]: Link break detected on Fibre Channel target HBA 3a with event status 1 , topology type 1, status1 0x0, status2 0x0. 
[Node1: fct_tpd_work_thread_0: scsitarget.slifct.wqeError:debug]: FC port 3a has a WQE processing failure of type SLI_ELS_REQ, command PLOGI, subtype x0, with status of 3 and an extended status x1a for NPIV port 0."


  • 問題を特定するには、以下の手順に従ってください:
    • コントローラ ポートのステータスでTx値が正常であることを確認し、Tx信号電力が低い場合はSFPを交換してください。
    • 接続されているスイッチ ポートのSFPステータスを確認し、スイッチ ポートのTx電力が低い場合はSFPを交換してください。
    • 両方のFC側でSFP Tx電力が正常だが、いずれかの側でSFP Rx電力が低い場合は、FCケーブルを交換してください。
    • パッチ パネルが関係している場合は、リンク コンポーネントのトラブルシューティングを行ってください。
    • 両端でRx信号が低い場合は、途中にパッチ パネルがないか確認し、テスト目的で別のポートを試してください。

例:
cluster1::> fcp adapter show -node Node1 -adapter 4c -instance
(network fcp adapter show)

Node: Node1
Adapter: 4c
Description: Fibre Channel Target Adapter 4c (Emulex LPe16000 (LPe16004), rev. 13, 16G)
Physical Protocol: fibre-channel
Maximum Speed: 16
Administrative Status: up
Operational Status: online
Extended Status: ADAPTER UP
Host Port Address: b10140
Firmware Revision: 11.2.219.4
Data Link Rate (Gbit): 16
Fabric Established: true
Fabric Name: xx:xx:xx:xx:xx:xx:xx:xx
Connection Established: ptp
Is Connection Established: true
Mediatype: ptp
Configured Speed: auto
Adapter WWNN: aa:aa:aa:aa:aa:aa:aa:aa
Adapter WWPN: bb:bb:bb:bb:bb:bb:bb:bb
Switch Port: switch1:1/88
Form Factor Of Transceiver: SFP
Vendor Name Of Transceiver: EMULEX
Part Number Of Transceiver: AFBR-57F5MZ-ELX
Revision Of Transceiver:
Serial Number Of Transceiver: AC1544J02X7
FC Capabilities Of Transceiver: 4,8,16 (Gbit/sec)
Vendor OUI Of Transceiver: 00:17:6a
Wavelength In Nanometers: 850
Date Code Of Transceiver: 15:10:26
Validity Of Transceiver: true
Connector Used: LC
Encoding Used: 64B66B
Is Internally Calibrated: true
Received Optical Power: 56.2 (uWatts)
Is Received Power In Range: true
SFP Transmitted Optical Power: 610.0 (uWatts)
Is Xmit Power In Range: true

または

Received Optical Power   587.2 (uWatts)
Is Received Power In Range  true
SFP Transmitted Optical Power 794.2 (uWatts)
Is Xmit Power In Range   true

スイッチ ポート RX/TX

RX Power:   -3.8   dBm (419.50uW)
TX Power:   -0.8   dBm (823.60 uW)

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